Eight movements, among which there are rules, Chen Yuan quickly learned. After that, it is a long-term practice of water grinding, which is long and long, and the range of movements is constantly increasing.

The two had lunch, and Hua Xue wanted to teach Chen Yuan something new.

After eating, it was not suitable for strenuous exercise, and Hua Xue remembered that Chen Yuan actually didn't know what the center of gravity was, so she popularized physics for Chen Yuan.

The word center of gravity is a purely physical term, although the folk have an intuitive application of this in production and life, but in fact, they are all accumulated over the years, the experience passed down from generation to generation, are all aware of it, but do not know why it is.

Chen Yuan learned dance in Liyuan, and he also has a good understanding of the center of gravity and balance. But these experiences did not help her understand the mechanics that Hua Xue told him, and even caused a great degree of interference to her understanding.

What she didn't understand in particular was why Hua Xue would tell her that when her body bends, the center of gravity will be outside her body. It gave her the feeling of listening to books and spells. She just listened to Hua Xue's explanation, and thought that she usually couldn't see the so-called center of gravity because it was inside the body, covered by the body.

So when she asked Hua Xue, "You said that the center of gravity of my body was outside the body when I bent my body, why can't I see it?" At that time, Hua Xue realized that there must be something wrong with her explanation.

So Hua Xue decided to sort out her thoughts and see how she could explain it to Chen Yuan. It happened that lunch had passed for a while, so he pulled up Chen Yuan again and practiced martial arts.

This practice is an afternoon, but fortunately, Chen Yuan has been practicing opera and dance diligently on weekdays, and his physical strength is excellent, and he has persevered after a few appropriate breaks in the middle.

After dinner, Hua Xue understood Chen Yuan's hard work, so she was very diligent and cleaned up the dishes and chopsticks alone, and then pulled Chen Yuan outside, pointed to the starry sky and said to Chen Yuan: "Sister, let's learn astrology next." ”

Chen Yuan was puzzled again: "The astrological signs are related to the formation of forces? Do I need to learn this too? Is it divination? Divination or something, will you be able to do it? ”

Hua Xue nodded and shook her head: "I don't know much about divination or anything you said, what I said about astrology is actually astronomy." You know that the straw boat borrows arrows, right? ”

"Hmm."

"When Zhuge Liang borrowed arrows from the grass boat, he fooled Lu Su and said: 'For the sake of the general, he does not know astronomy, does not know geography, does not know Qimen, does not know yin and yang, does not look at the formation map, does not know the strength of the army, is a mediocre talent.' ”

"Will you do any of these?"

Hua Xue's formal dress is cool, how can you say that it won't? Of course, it means: "A little bit of understanding, a little bit of understanding." Although Zhuge Liang obviously exaggerated the requirements for generals, these can indeed be used as part of the art of war, and those who will not may not be mediocre, but there are definitely benefits to learning, and maybe when they can turn the tide of the war. The terrible thing about Zhuge Liang in "Romance of the Three Kingdoms" is not that his intelligence really surpasses others, but that his knowledge is comprehensive, and there is almost nothing he doesn't understand. ”

"I really never knew you were so good! So you're teaching me how to count the stars today? ”

"Of course, it's not counting, but recognizing! First teach you to know the best star in the whole sky: the Big Dipper! ”

At this time, it is late spring, the Big Dipper is close to the zenith, and the weather today has remained as clear as it has been all these years, so it is very conspicuous.

"Beidou is composed of seven stars, Tianshu, Tianxuan, Tianji, Tianquan, Yuheng, Kaiyang, and Yaoguang, shaped like a bucket, and is in the northern sky all year round, hence the name Beidou. Among them, the four stars of Tianzi form the bucket body, and the other three stars are the bucket handles. Extending five times from the Tianxuan Tianshu in the fighting body, do you see that maverick star? It's called the North Star, which is the 'North Star'. Militarily speaking, this star is the most important star in the entire starry sky, and there is no one. Because in the Central Plains, at all times, it is due north of us. On a clear night, as long as we find the North Star through the Big Dipper, we can determine our north. ”

Hua Xue originally lived on an alien planet, and the star map is not the same as the earth, but the Big Dipper occupies a certain weight in Chinese culture, and the Jiang family is a family with a long heritage, so many cultures of the primitive planets have been inherited, and the Big Dipper is repeatedly mentioned, which can be regarded as familiar to Hua Xue.

Just pulled Chen Yuan out to look at the stars, because as a child in the interstellar era, star maps are basic common sense, so he forgot that this is not the same angle, thinking that he knows this starry sky very well.

As a result, he really looked up and reacted, which was completely different from the starry sky he had seen for thirteen years, no, he didn't know much about the star map of the primordial planets. As for the two predecessors, in fact, they don't know much about astronomy. It's good to remember the Big Dipper, so I didn't lose my ugliness. So I can only talk about the Big Dipper, hoping to get through tonight, and tomorrow to learn about the other stars from the information, or directly find an excuse to cover it up.

Of course, as the North Star, which is directly related to the Big Dipper, Hua Xue can't be mistaken.

That is, Hua Xue is well-informed and eloquent, just this Beichen and the Big Dipper, and really let him tell the flowers. After talking for a whole night, Chen Yuan felt that he had really increased his knowledge, but he didn't find that in addition to these eight stars, he didn't even know where the famous "Cowherd and Weaver Girl" and "Looking Northwest, Shooting the Sky Wolf" were.

It wasn't until it was time to rest at night, Hua Xue returned to bed, reviewed the day's teaching, and realized that Huijiao and Huijiao were really two completely different concepts.

The art of war is not in conflict with the general worldview of this era, and he directly uses Chen Yuan's familiar words as a teaching material, so although he is brainless and unsystematic, at least what he has said, Chen Yuan understands.

Martial arts can be intuitively imitated, Chen Yuan's body is extremely flexible, so it is not difficult to learn at all. It's just that Hua Xue also understands that it's no problem to imitate and practice, but Chen Yuan definitely doesn't understand the mental methods and theories in it. If she can understand that everything is counted, and everything is in her heart every day, Hua Xue feels that she is already very pleased.

As for why Zhou Tian can be positioned, if it weren't for his mathematical knowledge of the interstellar era, even the predecessor himself would not know much. I don't know if Mr. himself understands it, anyway, he didn't explain it to the predecessor, or maybe because his roots are still in "Haoran Righteousness", so Mr. "Yiwu" used in this transition did not analyze him thoroughly.

There is also the physical concept of the center of gravity, which is really out of step with the times. Speaking of which, at this time, Newton, who discovered the law of gravitation, should not have been born yet. How to make Chen Yuan understand, Hua Xue felt really a headache.